Home / 378,052.14-521,711.64-208,286.28

Finding the Fourth Proportional to 378,052.14, 521,711.64 and 208,286.28

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Solution

The fourth proportional to 378,052.14, 521,711.64 and 208,286.28 is: 287,434.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,052.14 : 521,711.64 = 208,286.28 : x
  2. Step 2: Convert to fraction form
    378,052.14/521,711.64 = 208,286.28/x
  3. Step 3: Cross multiply
    378,052.14x = 521,711.64 × 208,286.28
  4. Step 4: Simplify right side
    378,052.14x = 108,665,376,728.30
  5. Step 5: Solve for x
    x = 108,665,376,728.30/378,052.14
  6. Step 6: Final answer
    x = 287,434.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.